Law clerk, Judge Wayne E. Alley, U.S. District Court for the Western District of Oklahoma, 1988-1990. Law clerk, Judge William J. Holloway Jr., U.S. Court of Appeals for the 10th Circuit, 1990-1991. Private practice, Washington, D.C., 1991-1994. Assistant U.S. attorney, U.S. Attorney's Office for the Western District of Oklahoma, 1994-2005. Private practice, Oklahoma City, Okla., 2005-2006